From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Put the overlay color conversion unit into 10bit mode if the
pipe isn't using the 8bit legacy gamma. Not 100% sure this is
what the intention of the bit was but makes at least some sense to
me.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_overlay.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 23829374f751..e51592e35efe 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -777,9 +777,13 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
intel_frontbuffer_flush(new_bo->frontbuffer, ORIGIN_DIRTYFB);
if (!overlay->active) {
- u32 oconfig;
+ const struct intel_crtc_state *crtc_state =
+ overlay->crtc->config;
+ u32 oconfig = 0;
- oconfig = OCONF_CC_OUT_8BIT;
+ if (crtc_state->gamma_enable &&
+ crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT)
+ oconfig |= OCONF_CC_OUT_8BIT;
if (IS_GEN(dev_priv, 4))
oconfig |= OCONF_CSC_MODE_BT709;
oconfig |= pipe == 0 ?
--
2.21.0
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